1) Qimage won't pick up size information from PSD files in the same way it will from TIFFs or JPEGs. If I have a tiff file sized 50cm x 40cm at (say) 267ppi, it will print to the correct size, but the same image as a PSD wouldn't: it would assume the image was 300ppi (or whatever value I have set as default) and consequently print to the wrong size. Is this fixable?
As far as I can recall, the PSD file doesn't carry any embedded size in it.
So Qimage will use whatever you tell it to use... when you request original size.
Your best way with any print, is to just tell Qimage what size you want to print. It does all the rest for you.
2) The ability to add uneven borders round an image is great. I do loads of prints every day and the ability to enable 'Info' and print useful data next to the image is very useful. But I have to turn that option off when using photo mats because it prints next to the image rather than just outside the mat area (see image). Thankfully I can keep 'Edges' enabled because they print where they should. Up until the latest update I was also getting - I think - 'Preview' printed outside the mat with Info enabled, but that seems to have stopped
This was done intentionally. The info is on a mat because many users want a specific size image, and info would increase the size after the fact.
3) PSD and TIFF files that contain Alpha channels seem to confuse the hell out of Qimage sometimes, making the image garbled, at least in the Queue preview pane; I've never let one go to print as I assume it's a WYSIWYG preview.
Alpha channels were always a unique to PS issue. You should flatten and change to a Tif.
Fred